# 1985 Donnay Indoor Championships – Singles

John McEnroe was the defending champion, but did not participate this year.
Anders Järryd won the title, defeating Mats Wilander 6–4, 3–6, 7–5 in the final.

## Seeds

* Mats Wilander (final)
* Anders Järryd (champion)
* Kevin Curren (first round)
* Pat Cash (semifinals)
* Stefan Edberg (semifinals)
* Joakim Nyström (quarterfinals)
* Tomáš Šmíd (quarterfinals)
* Jan Gunnarsson (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Mats Wilander | 6 | 7 | | | | | | |
| 4 | Pat Cash | 3 | 6 | | | | | | |
| 4 | Pat Cash | 3 | 6 | | 1 | Mats Wilander | 4 | 6 | 5 |
| | | | | | 2 | Anders Järryd | 6 | 3 | 7 |
| 5 | Stefan Edberg | 6 | 6 | 3 | 2 | Anders Järryd | 6 | 3 | 7 |
| 2 | Anders Järryd | 7 | 3 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Wilander | 6 | 6 | | | | | | | | | | | | | | | |
| | J Fitzgerald | 3 | 4 | | 1 | M Wilander | 6 | 7 | | | | | | | | | | |
| WC | J Grandjean | 4 | 6 | | | F González | 4 | 6 | | | | | | | | | | |
| | F González | 6 | 7 | | | | | | | 1 | M Wilander | 6 | 5 | 7 | | | | |
| | V Amritraj | 6 | 6 | 7 | | | | | | | H Günthardt | 1 | 7 | 5 | | | | |
| WC | K Demuynck | 2 | 7 | 6 | | V Amritraj | 6 | 3 | 0 | | | | | | | | | |
| | H Günthardt | 6 | 6 | | | H Günthardt | 1 | 6 | 6 | | | | | | | | | |
| 8 | J Gunnarsson | 3 | 3 | | | | | | | | | | | | 1 | M Wilander | 6 | 7 |
| 4 | P Cash | 2 | 6 | 6 | | | | | | | | | | | 4 | P Cash | 3 | 6 |
| Q | M De Palmer | 6 | 3 | 3 | 4 | P Cash | 7 | 6 | | | | | | | | | | |
| | M Mitchell | 4 | 1 | | | M Mitchell | 5 | 4 | | | | | | | | | | |
| | M Dickson | 6 | 0$^r$ | | | | | | | 4 | P Cash | 6 | 6 | | | | | |
| | J Lloyd | 6 | 6 | | | | | | | 6 | J Nyström | 4 | 2 | | | | | |
| | S Meister | 1 | 4 | | | J Lloyd | 6 | 6 | 4 | | | | | | | | | |
| | H Leconte | 2 | 3 | | 6 | J Nyström | 4 | 7 | 6 | | | | | | | | | |
| 6 | J Nyström | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | S Edberg | 6 | 7 | | | | | | | | | | | | | | | |
| | T Wilkison | 1 | 5 | | 5 | S Edberg | 6 | 6 | | | | | | | | | | |
| Q | J Hlasek | 6 | 6 | | Q | J Hlasek | 3 | 1 | | | | | | | | | | |
| | P Složil | 1 | 2 | | | | | | | 5 | S Edberg | 7 | 6 | | | | | |
| Q | C Hooper | 3 | 6 | 7 | | | | | | | S Giammalva Jr. | 6 | 3 | | | | | |
| | P McNamee | 6 | 4 | 5 | Q | C Hooper | 6 | 1 | | | | | | | | | | |
| | S Giammalva Jr. | 7 | 4 | 6 | | S Giammalva Jr. | 7 | 6 | | | | | | | | | | |
| 3/WC | K Curren | 6 | 6 | 1 | | | | | | | | | | 5 | S Edberg | 6 | 6 | 3 |
| 7 | T Šmid | 6 | 7 | | | | | | | | | | | 2 | A Järryd | 7 | 3 | 6 |
| | T Allan | 2 | 5 | | 7 | T Šmid | 5 | 7 | 7 | | | | | | | | | |
| | B Becker | 7 | 5 | 6 | | B Becker | 7 | 6 | 5 | | | | | | | | | |
| | B Green | 6 | 7 | 4 | | | | | | 7 | T Šmid | 4 | 4 | | | | | |
| | J Frawley | 3 | 6 | 5 | | | | | | 2 | A Järryd | 6 | 6 | | | | | |
| Q | T Högstedt | 6 | 4 | 7 | Q | T Högstedt | 3 | 1 | | | | | | | | | | |
| | W Fibak | 6 | 2 | 2 | 2 | A Järryd | 6 | 6 | | | | | | | | | | |
| 2 | A Järryd | 2 | 6 | 6 | | | | | | | | | | | | | | |